mcdonald and



f. A. McDONALD AND W. R. FORSY TH.

VENEER PRESS. APELICATION man APR- 30. m5.

1,315,976. I Patentedsept. 16,1919.

Flg. Z.

UNITED STATES PATENT OFFICE.

JOSEPH a. MQDONALD, or amaunnnatn, AND WILLIAM a. ronsYTn, orSWAMPSCOTT, MASSACHUSETTS; sans) MCDONALD nssien'on, BY MESNEassrennnnrs, ornrs nren'r To unrrnnsnon 1VIAGHI1\TERY conronerlon, orrarnnson, NEW JERSEY,

a .CQBPORATiQ FN W EBQ EY- VE EER-Tunes.

*Agplication flledApril 30, 1915. SerialNo. 25,060.

lTocZZ whomit mayconccrn:

Be it known that we, JOSEPH McDon- ALD and WI LIAM R. FoRsYTH, citizensof the United States, residing i at .Auburnd ale, in the county ofMiddlesex, and Swampscott, in the county of Essex, andState ofMassachusetts, respectively, have invented certain Improvements inVeneer-Presses, of whiclrthe following description, in connection withthe accompanying drawings, is a specification, -'like referencecharacters on thedrawings indicating like parts in the several lfigures.

This invention relates to presses and is herein illustrated inconnection with a veneerpress for usein the manufacture of boots andshoes.

In the manufacture of 'Mc'Kay shoes it is customary to cement to theinner surface ofthe foreparto-f a solea tap the rear end of which isskived. *Hither'to it has been the practice to lay the cemented tapsupon the cemented soles, then to pile the veneered soles in apress, andfinally to exert positive pressure upon the pile by means of a screw.Ordinarily from tentotwelve hours are required for the drying andsetting of the cement; and from this fact two disadvantages result:First, a large number of presses are required, and second, inasmuch asthe pileof soles shrinks duringthe drying process, itis necessary totighten *thescrewsof the presses at frequent intervals in order tomaintain sufficient pressure.

According to one featnre of the present invention pressure is applied tothepile of blanks through a spring which isthereby compressed, and meansare provided for holding the spring compressed after the pressure iswithdrawn. In the illustrative device there is f provided a holderhaving a support'forfthe pile of 'blanks which rests upon a spring, aclamping-member slidable on'the holder toward the support, and a onewayclutch connecting the clamping mem her and holder. With such aconstruction a pile of veneered soles may be assembled intheholder, theholder pla ced in the press, pressure applied upon the movable end orclamp to force the soles together and at the same time to compress thespring which supports the other end or clamp member.

When sufficient pressure has been applied c ,Specification of LettersPatent.

Patented Sept. 16, 1919.

the adjustable clamp member is locked in position; and the holder maythen be re moved :from the press and placed aside without further"attention, the compressed spring serving to maintain sufficient@pressure upon the soles during the drying operation. Thus, byprovidinga large number ot'holders, comparatively few presses will be required.

These and other features of'theinvention including certain details ofconstruction and combinations of parts will be described inconnectionwith an illustrative machine and pointed out in the appendedclaims.

Referring now to the accompanying drawings Figure *1 is a perspective ofa machine in which the present invention isembodied Fig. 2 is afragmentary sectional view showing more particularly the relation of thedouble pawltothe rack bar;

Fig. 3 is a similar view showing more particularly-the relation of i theoperating pawl to the rack bar;

Fig. a is a similar view of the holder showing themeans Tor-locking theclamping member in position. i

The press, as distinguished fl'olfh the "holder, comprises a base 1, twomorights 3 and a cross piecefi. Bolted to the under side of thecross-piece is a boX7 having an upwardly extending projection providedwith a square passageway to receive a rack'bar 9, said rack-bar beingformed on two contiguous sides with series of teeth 11 and 13. At 113slower end the rack-bar is connected by a ball and socket joint with apresser 15 which is adapted to contact with the clamping member of theholder as will presently bedescribed. An o )eratinglevcr l7 =pivoted at19 to the [box 7 has a cylindrical socket to receive the cylindrical*huboit an operating pawl 21, a spring 23 servingto urge said pawl atall times tovvardthe rackbar. In the positions of parts shown 1n thedrawings this pawl is held away i'Tom Fig. 1. The upper point 131 of thedouble pawl serves, when in the position shown, to prevent the rack-barfrom moving in either direction and is so held when the operating lever17 is in raised position by a spring 35 which connects the handleportion of the rod 33 with a pin 37 carried by the operating lever 17.If now it is desired to operate the jack, the double pawl is rocked tobring the lower point 231 into engagement with the teeth 11, and theoperating lever 17 is forced downwardly to cause the pawl 21 to engageone of the teeth 13 and force the rack bar downwardly. Furthermanipulation of the lever 17 will force the rack-bar downwardly byintermittent steps; and whenever the desired amount of downward movementhas been imparted to the rackbar, the lever 17 is raised into theposition shown and the handle portion of the rod 33 raised and released,whereupon the parts will be held in the position shown. If now it isdesired to raise the rack-bar the handle portion of the rod 33 ismanipulated to bring the double pawl to neutral position, whereupon therack-bar may be lifted to any desired position. Release of the doublepawl 33 will then permit the spring 35 to throw the double pawl backinto the position shown in Fig. 2 to hold the rack-bar from falling.

The holder for the veneered soles comprises a U-shaped frame 39. To thebase of said frame isfastened a leaf spring 41, and upon the springrests a support 43 for a pile of blanks, said support being attached, ifdesired, to one end of said leaf spring. Slidable upon the arms of the Uis a clamp ing member 44 which comprises a rectangular frame and twoeccentrics 45 carried thereby on rotatable studs 47, the direction ofextent of greatest eccentricity being indicated by the dot and dashlines in Fig. 4. A spring 49 connects the eccentrics, as shown, and isof sufficient strength to prevent the clamping member from sliding downthe uprights 39 under the influence of gravity. It will be noted,however, that the eccentrics are in effect a one-way clutch whichpermits the. clamping member 44 to be pushed downwardly if suiiicientforce is applied but prevents it from being lifted. The studs 47 havesquare ends to receive socket wrenches for locking the member 44 .moresecurely in adjusted position or if desired for unlocking it after ithas been locked.

down into contact with the board after which the holder is placed on thebase 1. The operator then pushes down on the handle portion of the rod33 and then manipulates the lever 17 to force the rack-bar 9 downwardly.When sufiicient pressure has been applied in this manner to put thespring 41 to the desired degree of tension, the eccentries45 may beturned to lock the clamp 44 firmly in place. The lever 17 is then raisedto the position shown in Figs. 1 and 3, the double pawl moved to neutralposition, while the rack-bar is lifted, and then to the position shownin Fig. 2. The holder is then removed and put aside. It will be notedthat the spring 41 is under tension and that, therefore, a steadypressure will be maintained on the veneered soles during the drying andsetting process.

Although the invention has been described in connection with aparticular machine it should be understood that the invention is notlimited in the scope of its application to the particular machine shownand described.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent:

1. A machine of the class described having, in combination, means forsupporting a pile of blanks, a spring, means for applymg pressure tosaid blanks through said spring whereby said spring is compressed, andmeans for holding said spring compressed when the pressure applyingmeans is removed.

2. A holder for a pile of blanks adapted to be placed in and removedfrom a press,

having, in combination, a frame to receive the blanks, a clamping memberadapted to receive the thrust of a pressure-applying member of the pressand to be moved thereby along the frame to compress the pile of blanks,a spring through which the pressure is applied, and means for lockingthe clamping member in compressing position to maintain the pressureafter the holder has been removed from the press.

3. A holder for a pile of blanks adapted to be placed in and removedfrom a press, having, in combination, a U-shaped frame, a springconnected with said frame, a support for the pile resting upon thespring, a clamping member slidable on the arms of the frame and adaptedto receive the thrust of a pressure-applying member, and a one-wayclutch connecting the clamping member and frame.

In testimony whereof we have signed our names to this specification.

' JOSEPH A. MoDONALD. WILLIAM R. FORSYTH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

